Okay, a few point, question and comment to consider:
Take advantage of the college students - have them go to their profs and other department heads for assistance and guidance. See if you can get some help writing a Business Plan - if for no other reason than to help clarify your intent, mission and avenues of attack.
Do you plan to write the PRs or also handle submitting them?
Yes, many people do their own in-house work for a lot of things. But then let's look at what they also outsource:
ebay - PPC -
SEO - SES - affiliate marketing - and much more!
Offering your services intially to small, local business would be a good way to get your feet wet and build your portfolio.
Also, the freebie idea would go over well. I wouldn't advertise it, just do so with locals to help get established and a foothold so to speak.
It'll be interesting to see how this progresses for you - please keep up posted.
Good Luck!
w®m